delta g


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Ghadir Seder 1G
Posts: 134
Joined: Sat Sep 14, 2019 12:17 am

delta g

Postby Ghadir Seder 1G » Thu Feb 27, 2020 9:24 am

Can someone explain why delta g equals 0 when the reaction is at equilibrium?

Joowon Seo 3A
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am
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Re: delta g

Postby Joowon Seo 3A » Thu Feb 27, 2020 9:39 am

Because there is no more free energy to do work when the reaction is at equilibrium because the reaction is at the most stable point.

Jaci Glassick 2G
Posts: 104
Joined: Sat Jul 20, 2019 12:16 am

Re: delta g

Postby Jaci Glassick 2G » Thu Feb 27, 2020 10:07 am

DeltaG is a measure of how much potential a reaction has left to do a net something, so if the reaction is at equilibrium, then no more work can be done and deltaG is 0.

Justin Quan 4I
Posts: 104
Joined: Sat Sep 14, 2019 12:17 am

Re: delta g

Postby Justin Quan 4I » Fri Feb 28, 2020 8:41 am

To show why ∆G=0 at equilibrium from a mathematical perspective, use ∆G˚= - RTlnK and ∆G = ∆G˚ + RTlnQ. If we substitute ∆G˚ out, then ∆G = RTlnQ - RTlnK. When the reaction is at equilibrium, the Q=K, thus ∆G = RTlnQ - RTlnK = RTlnK - RTlnK = 0.


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